If the maximum temperature recorded at San Francisco for Jan 15, 2026, is between 66-67° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes. Data for CLISFO can be found by clicking the following URL: https://www.weather.gov/wrh/Climate?wfo=mtr, navigating to the "Observed Weather" tab, and choosing the location "San Francisco Airport" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies. Not all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the highest temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data. The Last Trading Time will be 11:59 PM ET on January 15, 2026 regardless of any data releases or events occurring. Expiration will occur on the sooner of the first 7:00 or 8:00 AM ET following the release of the data for January 15, 2026, or one week after January 15, 2026.